Multi-trunking petroleum pipe structure

Abstract

The invention discloses a multi-trunking petroleum pipe structure comprising an inner pipe body and an outer pipe body. The inner pipe body is arranged at the center of an inner cavity of the outer pipe body, a glass wool heat preservation and insulation layer is arranged on the outer surface of the inner pipe body, a glass fiber reinforced plastic protection shell is sleeved on the outer surface of the outer pipe body, a protective plastic film is arranged on the outer layer of the glass fiber reinforced plastic protection shell, and six leakage alarm lines with protective shells are evenly arranged in a cavity between the inner pipe body and the outer pipe body. The multi-trunking petroleum pipe structure has the advantages that heat preservation and insulation performances and corrosion resistance of the inner pipe body can be guaranteed by the aid of the glass wool heat preservation and insulation layer arranged on the outer surface of the inner pipe body, and safety operation of a heat supply network can be guaranteed as the six leakage alarm lines with the protective shells are arranged between the inner pipe body and the outer pipe body; meanwhile, the glass fiber reinforced plastic protection shell and the protective plastic film are added to the outside of the outer pipe body, and accordingly service life of the outer pipe body is prolonged beneficially, and maintenance cost is lowered greatly.

Description

Technical field [0001] The present invention relates to the technical field of petroleum exploitation, in particular to a multi-slot petroleum pipe structure. Background technique [0002] At present, pipe fittings used in petroleum, chemical, electric power, shipbuilding, metallurgy, machinery, textiles, food, construction, pharmaceuticals and other industries need to have high strength, pressure resistance, corrosion resistance, and high temperature resistance. In the field of exploitation technology, in order to improve the oil recovery rate of oil fields, secondary oil recovery and tertiary oil recovery are usually carried out. Secondary oil recovery is the method of supplementing formation pressure through water injection to recover oil; tertiary oil recovery is through gas injection, chemical injection, and microbial injection To achieve this, due to the high viscosity of underground heavy oil, in order to make it have good fluidity, the temperature of the liquid or gas inj...

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Problems solved by technology

But at present, this kind of steel pipe has poor insulation effect, is not corrosion-resistant, and has a short service life; especially the setting of the trunking is not reasonable enough, and necessary protective structures need to be added

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